Home / 319,107.32-440,443.15-198,339.82

Finding the Fourth Proportional to 319,107.32, 440,443.15 and 198,339.82

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Solution

The fourth proportional to 319,107.32, 440,443.15 and 198,339.82 is: 273,755.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,107.32 : 440,443.15 = 198,339.82 : x
  2. Step 2: Convert to fraction form
    319,107.32/440,443.15 = 198,339.82/x
  3. Step 3: Cross multiply
    319,107.32x = 440,443.15 × 198,339.82
  4. Step 4: Simplify right side
    319,107.32x = 87,357,411,897.32
  5. Step 5: Solve for x
    x = 87,357,411,897.32/319,107.32
  6. Step 6: Final answer
    x = 273,755.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.